Development of the Earth’s Field NMR Spectrometer for Liquid Screening
Development of the Earth’s Field NMR Spectrometer for Liquid Screening
复制标题
用于液体筛选的地球场核磁共振波谱仪的开发
DOI：
10.1007/s00723-012-0346-5
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发表时间：
2012
影响因子：
1
通讯作者：
Hideo Sato-Akaba
中科院分区：
文献类型：
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作者：
福田誠;米内巨樹;吉田和博;今野和彦;新田益大;Goto.Y;Hideo Sato-Akaba
地球场核磁共振（NMR）可通过评估各种液体中质子的自旋晶格弛豫时间来进行无损瓶内液体筛查。地球场核磁共振设备已经开发和优化，用于测量 500 毫升 PET 瓶中各种液体的自旋晶格弛豫时间。报告了两种使用谐振器中生成的瞬态振荡信号来生成 90 度读出脉冲的方法。纯水的检测下限为 1 ml。可测量的最小自旋晶格弛豫时间为 50 毫秒。
Earth’s field nuclear magnetic resonance (NMR) can be used for non-destructive in-bottle liquid screening by evaluating the spin–lattice relaxation times of protons in various liquids. An Earth’s field NMR apparatus has been developed and optimized to measure the spin–lattice relaxation times of various liquids contained in 500 ml PET bottles. Two methods to generate 90-degree readout pulses using transient oscillating signals generated in a resonator are reported. The lower detection limit of pure water was 1 ml. The minimum measurable spin–lattice relaxation time was 50 ms.